package com.supreme.studyserver.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.task.TaskExecutor;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ThreadPoolExecutor;

@Configuration
@EnableAsync
public class TaskExecutorConfig {

    public static final String ASYNC_TASK = "asyncTaskExecutor";
    public static final String SUPREME_TASK = "supremeTaskExecutor";

    @Bean(value = ASYNC_TASK)
    public ThreadPoolTaskExecutor asyncTaskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        // 设置核心线程数
        executor.setCorePoolSize(5);
        // 设置最大线程数
        executor.setMaxPoolSize(10);
        // 设置队列容量
        executor.setQueueCapacity(20);
        // 设置线程活跃时间（秒）
        executor.setKeepAliveSeconds(60);
        // 设置默认线程名称
        executor.setThreadNamePrefix("async-qum-");

        // 设置拒绝策略 - 默认执行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        // 设置拒绝策略 - 自定义拒绝策略
//        executor.setRejectedExecutionHandler(new TaskRejectedExecutionHandler());

        // 等待所有任务结束后再关闭线程池
        executor.setWaitForTasksToCompleteOnShutdown(true);

        // 线程初始化
        executor.initialize();

        return executor;
    }

    @Bean(value = SUPREME_TASK)
    public ThreadPoolTaskExecutor supremeTaskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        // 设置核心线程数
        executor.setCorePoolSize(5);
        // 设置最大线程数
        executor.setMaxPoolSize(10);
        // 设置队列容量
        executor.setQueueCapacity(20);
        // 设置线程活跃时间（秒）
        executor.setKeepAliveSeconds(60);
        // 设置默认线程名称
        executor.setThreadNamePrefix("async-supreme-");

        // 设置拒绝策略 - 默认执行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        // 设置拒绝策略 - 自定义拒绝策略
//        executor.setRejectedExecutionHandler(new TaskRejectedExecutionHandler());

        // 等待所有任务结束后再关闭线程池
        executor.setWaitForTasksToCompleteOnShutdown(true);

        // 线程初始化
        executor.initialize();

        return executor;
    }
}
